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                        <h2 class="blogHeading">睡觉小哥| 为什么人的睡眠会「自然醒」？自然醒意味着休息够了吗？</h2>
                        <p>
                            有朋友问我这个问题，我也只能从现象的层面来说一说，因为人类目前关于睡眠所知的还很少。除去年龄对睡眠时间的影响，「自然醒」主要和两个因素有关，一是昼夜节律（类似生物钟），在人体的24小时「生物钟」内，体温会出现周期性的变化，就正常的「生物钟」来说，凌晨 4:30 体温最低，6:45 是体温升高最快的时候，而体温升高的阶段很容易醒过来。但工作日和假期的作息不一致会使「生物钟」不准，睡觉前看电视，玩手机等等对着屏幕的行为也有可能扰乱「生物钟」。</p>
                        <p class="mb43">
                            二是睡眠周期，一个睡眠周期大约90分钟，经历不同的阶段，有快速眼动睡眠期（REM），非快速眼动睡眠期（NREM），NREM又分成很多阶段，研究表明，在睡眠处于快速眼动睡眠期时容易唤醒，而夜里随着睡眠周期的推进，快速眼动睡眠期（REM）的时间不断变长，所以越到后面就越容易醒来。婴儿的REM期加起来可以达到每天9小时，而5岁之后每天的REM时长就不超过2小时了。</p>
                        <p>
                            在REM期内有短暂的唤醒状态，可能只持续几分钟甚至数秒，相对而言，REM期对外界环境也比较敏感。到了第三个睡眠周期开始就无法进入NREM的Stage 3/4，也就是坊间传闻的「深度睡眠」期，这段时间对外界环境最不敏感，最能消除睡意、修复身体的阶段，也是生长激素大量分泌的阶段。
在丘脑中有一个核团（VPL），睡眠时会对外界环境的刺激产生反应，反应很弱，然后平息，随着睡眠时间推进，应激反应增强，不能迅速平息，就醒了…
</p>
                        <p>但这些都只能说是现象，不算真正原因……真正原因我也不知道也查不到。</p>
                        <p>
                            了解这些事实后，我睡觉时就很少需要设置闹钟了，尽量让自己的昼夜节律保持很准的状态，比如睡前不玩手机不看电视，所以即使偶尔忙到凌晨2点睡，也能在7点左右「自然醒」。</p>
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                            感兴趣的朋友，我们可以在评论区再聊聊这个问题，期待对问题有更好更深的解答。</p>
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                        <h3>睡觉小哥</h3>
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                        <p>你好啊，我是爱睡觉的睡觉小哥。</br>曾经的我深受睡眠问题困扰，因此学习了很多睡眠知识，在这里我会尽力将这些知识分享给大家，解答大家的疑惑~希望对你有帮助，喜欢就关注我吧！</p>
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                                    <h3>-AAA-</h3>
                                    <div class="commentTime"><span>2022-7-5</span><span>11：55</span></div>
                                    <div class="commentContent">对于睡前玩手机看电视会导致生物钟的打乱我可能不大赞同。但可能也是每个人不同的原因造成的。比如说我吧，睡前一定是玩着手机听着歌睡着的。然后无论睡多晚，第二天的六点钟左右都会醒来。这是固定的甚至我已经没办法改变的，实在很困那么就会醒来之后再等睡着。</div>
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                                    <h3>不开心果</h3>
                                    <div class="commentTime"><span>2022-7-5</span><span>17：39</span></div>
                                    <div class="commentContent">如果没有闹钟，等我自然醒要睡上十几个钟头，真的崩溃 </div>
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                                            <h3>柠檬树下有个我</h3>
                                            <div class="commentTime"><span>2022-7-7</span><span>13：52</span></div>
                                            <div class="commentContent">说明睡眠质量好啊！那些整夜睡不着焦虑的人还特别想这样呢 </div>
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                                                    <h3>秃头Wang</h3>
                                                    <div class="commentTime"><span>2022-7-8</span><span>11：23</span></div>
                                                    <div class="commentContent">我感觉其实睡十几个小时，说明睡眠质量不好。我睡这么久的时候，基本上都是浅睡眠，能记住做梦内容的。</div>
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                                    <h3>好想进大厂11123</h3>
                                    <div class="commentTime"><span>2022-7-5</span><span>22：18</span></div>
                                    <div class="commentContent">经常三点多醒过来…感觉上跟早晨七点那种自然醒相似 就是突然完全不困了（至今无解</div>
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